题目内容

The heat ________from her white sand formed a mirage.

A. reflected　 　　B. reflecting 　　C. to reflect 　　 D, have reflected

 

A

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If two scientists at Los Alamos National Laboratory are correct, people will still be driving gasoline-powered cars 50 years from now, giving out heat-trapping carbon dioxide into the atmosphere — and yet that carbon dioxide will not contribute to global warming.

In a proposal by two scientists, vehicle emissions (排放) would no longer contribute to global warming. The scientists, F. Jeffrey Martin and William L. Kubic Jr., are proposing a concept, which they have named Green Freedom, for removing carbon dioxide from the air and turning it back into gasoline.

The idea is simple. Air would be blown over a liquid solution (溶液) of potassium carbonate, which would absorb the carbon dioxide. The carbon dioxide would then be put to chemical reactions that would turn it into fuel: gasoline or jet fuel.

This process could change carbon dioxide from an unwanted, climate-changing pollutant into a vast resource for renewable fuels. The cycle — equal amounts of carbon dioxide produced and removed — would mean that cars, trucks and airplanes using the synthetic (合成的) fuels would no longer be contributing to global warming.

Although they have not yet built a synthetic fuel factory, or even a small model, the scientists say it is all based on existing technology. “Everything in the concept has been built, is operating or has a close cousin that is operating,” Dr. Martin said.

The Los Alamos proposal does not go against any laws of physics, and other scientists who have independently suggested similar ideas. Dr. Martin said he and Dr. Kubic had worked out their concept in more detail than previous proposals.

There is, however, a major fact that explains why no one has built a carbon-dioxide-to-gasoline factory: it requires a great deal of energy.

According to their analysis, their concept, which would cost about $5 billion to build, could produce gasoline at an operating cost of $1.40 a gallon and would turn economically practical when the price at the pump hits $4.60 a gallon.

Other scientists said the Los Alamos proposal perhaps looked promising but could not evaluate it fully because the details had not been published.

“It’s definitely worth pursuing,” said Martin I. Hoffert, a professor of physics at New York University. “It’s not that new an idea. It has a couple of pieces to it that are interesting.”

67. What is the idea of the project being discussed in the article?

A. Recycling the carbon dioxide from cars back into gasoline.

B. Create a new gasoline that gives off very little carbon dioxide.

C. Using a special liquid solution to absorb carbon dioxide from cars.

D. Build synthetic fuel factories to remove carbon dioxide from the air.

68. What’s the name given to the new concept?

A. Synthetic Fuel.                                 B. Green Freedom.    

C. Renewable Fuel.                                D. Carbon-dioxide-to-gasoline Factory.

69. Which of the following is NOT one of the benefits of this new concept as suggested in the article?

A. Reduction of global warming.            B. Cheaper gasoline for cars.

C. Longer life of cars.                     C. Less pollution of the atmosphere.

70. What’s the biggest problem in realizing the concept according to the report?

A. Shortage of starting funds.         B. Immature technology involved.

C. All previous similar attempts have failed.

D. The use of too much energy in running the fuel factory.

Geologists have been studying volcanoes for a long time.Though they have learned a great deal,they still have not discovered the cause of volcanic action.They know that the inside of the earth is very hot,but they are not sure exactly what causes the great heat.Some geologists have thought that the heat is caused by the great pressure of the earth’s outer layers.Or the heat may be left from the time when the earth was formed.During the last sixty years scientists have learned about radium,uranium,thorium,and other radioactive elements.Many scientists now believe that much of the heat inside the earth is produced by radioactive elements.

Whatever the cause of the heat may be,we do know that the earth gets hotter the farther down we dig.In deep mines and oil wells the temperatures rise about 1°F for every 50 feet.At this rate of the temperature 40 miles below the earth’s surface should be over 4 000°.This is much hotter than necessary to melt rock.However,the pressure of the rock above keeps most materials from melting at their usual melting points.Geologists believe that the rock deep in the earth may be plastic,or puttylike（油灰状的）.In other words,the rock yields slowly to pressure but is not liquid.But if some change in the earth’s crust releases the pressure,the rock melts.Then the hot,liquid rock can move up toward the surface.

1.The cause for the great heat inside of the earth is______.

A.great pressure of the earth’s outer layers

B.the heat left from the time when the earth was formed

C.radioactive elements giving out heat

D.not sure

2.According to the passage,______ prevents most rock from melting at its usual melting points.

A.the pressure of the rock itself

B.the pressure of the rock above

C.the pressure of the earth’s outer layers

D.the heat given out by some radioactive elements

3.According to the passage,which of the following is NOT true?

A.The farther down,the hotter the earth gets.

B.The rock deep in the earth is liquid.

C.When the pressure releases from the earth’s crust,the rock melts.

D.Rock would be melted at 4 000°.

 

Don’t get mad--- get promoted

When it comes to succeeding at work, conventional wisdom says you should check your emotions at the door. But Anne Kreamer, the author of the new book It’s Always Personal, disagrees. “It reduces people’s ability to bring their best selves to their work,” she says. ___1___ Here’s how to turn your emotions into opportunities.

__2___

How to get promoted: Engage in joint（联合的）problem solving.

Losing your temper at work is “universally uncool,” say Kreamer. But opening your emotional floodgates strategically can lead to solutions if both sides are willing to work together. ___3___ “The specific time and private space establishes boundaries so you have a greater chance of achieving a constructive outcome and maintaining the relationship,” Kreamer adds.

I feel: Afraid and anxious.

How to get promoted: Improve planning skills.

___4___ Identify what’s behind your fear and take specific action --- ask your manager for details and take on some responsibilities. You’ll calm down and do a better job. “No boss minds helping an eager employee learn something new, but every boss hates having to deal with a bungled（搞糟了的） project,” says Kreamer.

I feel: Happy.

How to get promoted: Increase creativity and productivity.

When you’re in a positive mood, your brain activity actually shifts, says Kreamer. “Your focus deepens, and your dopamine（多巴胺） levels increase. ___5___”

A．I feel: Angry.

B．I feel: like crying.

C．This helps you see things from a different perspective.

D．It’s a signal that there’s a problem that needs to be solved.

E. Are you clear about an assignment or underprepared for a meeting?

F. Instead, Kreamer suggests acting on your feelings can help you do a good job.

G. Rather than face the offender in the heat of the moment, schedule a one-on-one meeting.

 

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中由两项为多余选项。

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When we speak of a basic human need we mean something necessary to life, something we cannot do without. Food is a basic human need. Without it we would starve to death. Whether in primitive(原始的)countries or in more advanced societies, man’s food needs are the same. 2.

But primitive people eat only the food which can be grown near their homes, whereas people in more advanced societies eat food which is often grown many thousands of miles away from their homes. Primitive people are satisfied with less kinds of food, therefore we can say people’s wants are different although their needs are the same.

3.Clothing is necessary to regulate (调节) the heat of our bodies. In different climates and in different seasons we need more or less clothes. We also dress differently for other reasons. 4.

Shelter, the third of our needs, depends on climate, the skill of the builders, one’s social position, and the material which can be used. 5.The three-bed-roomed house of the average family would not be grand enough for a very rich family, but a modern house with many of the material comforts were denied to the kings and queens in the past.

A. Food, Clothing and Shelter.

B. Human Needs

C. We always change our style of clothing for different occasions, such as work, sports, parties.

D. We all need food to live a healthy life.

E. We want to live comfortably .

F. The simple shelter of the primitive people would not do for us, and yet it satisfied their needs.

G. The same is true of the second of human needs.

 

 

[A] This 1000-wat electric kettle rapidly boils up to 1 quart of water for coffee, tea and more. It provides a rapid and quiet heating process, making it ideal for the office, home or students’ bedroom, and unit’s easy-open lid is designed with a security lock to prevent spilling. The kettle automatically shuts off when the water boils.

 [B] This 12-inch everyday pan is made of aluminum, allowing for quick heat giving. The stainless-steel handles are comfortable to grasp, plus they decrease heat moving so handles stay cool on the stovetop. The included lid is ideal for moist-heat cooking. It cooks fast and is easy to clean and can cook everything with little oil or no oil.

 [C] This lightweight carpet cleaner comes with a display of convenient features. It gets under furniture and in hard-to-reach areas, and it is removable for easy clean-up. It provides heavy-duty cleaning for the worst type dirt, like high-traffic areas and pet stains, and dirty water and clean water always remain separate. It is ideal for carpeted stairs.

 [D] This electric pressure washer is an ideal choice for home and auto cleaning projects. It features and an instant stop or start function. It also includes an adjustable pressure nozzle(喷嘴), so you can adjust pressure from 100 PSI to 1300 PSI, and owns effective cleaning power.

 [E] This solar spotlight turns on automatically at dark and off at dawn. Show off garden accessories like fountains or light a path through your yard with a solar light that needs neither electricity nor maintenance. Solar lighting saves money and energy by gathering power from the sun.

 [F] Keep the air in the home, office, or workplace circulating with this high-performance fan. It features a design for fast, focused cooling and effective air circulation. It also comes equipped with a three-speed motor and a specially-designed blade, which provides different power. Thoughtfully designed, the fan can also be wall mounted to help save floor space.

阅读以下消费者的信息，然后匹配他们拟要购买的电器。

1.Terminal examination is coming near and it is getting hotter and hotter. Michael studies hard at his desk, often wet through with sweat. Now what he is most longing for is some kind of instrument that can cool himself while he is doing his lessons at the desk so he can have a better learning result.

2.It is only a few days before Christmas Day. Jacky and his family are to give their house a thorough cleaning. As his father has some trouble with his health, Jacky volunteers to undertake the task of cleaning the ceiling and walls. In order to do a better job, he is eager to find an ideal instrument to match his aim.

3.For the purpose of being admitted by a key university, Harry has been burying himself in lessons and often studies until late into the night so that he often feels tired out and sleepy. “Why not refresh myself with a cup of coffee now and then?” He thinks and then he comes up with an idea….

4.Simon has decided to go hiking with his classmates for a holiday and hopes to have a picnic by cooking in the open air to add pleasure and fun to their trip. Now he is given the task that he should get an instrument with which they can cook delicious dishes.

5.Peter’s mother is a cleaner whose job is to get clean kinds of floors, including carpets of many buildings. The boring work—especially the stair carpet cleaning—often makes her mother worn out. So Rachel is anxious to buy her an easy-to-use machine to take the place of her mother’s heavy work.

 

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